AFAIK none of the primary schools here in the Netherlands give kids any homework until the last 2 or 3 years of primary school, when the kids are 9 or 10 at least.
Don't forget that primary school starts later in Germany than in the Netherlands where children go to primary school from the day of their fourth birthday. In contrast, German primary school starts around the age of 6 (not exactly because all children regardless of birth date start in summer).
That means that the two to three years of primary school without homework mostly equate with the last two years of kindergarten in Germany (which obviously also do not assign any homework)
Primary school in the Netherlands lasts 8 years, typically from age 4 to 12. The first 2 years used to be to be separate and non-mandatory until the 1980s, when they were merged into a single 8 year track. Homework typically doesn't start until the 5th or 6th year, so when the kids are age 9 or 10. They certainly don't get any homework before they're 8 years old.